a nerve

brains

spinal cord

all of the above

1 foot per second

150 meters per second

100 miles per hour

1 meter per second

skin cells

liver cells

stem cells

muscle cells

the brain

wire

nerve

muscle

stem cells

muscle cells

glial cells

prison cells

100 years

10 years

1 year

1 month

multipolar neurons

bipolar neurons

Purkinje neurons

pyramidal neurons

they regenerate very quickly

they do not have a nucleus

they are very long compared to other cells in the body

they help carry oxygen to different parts of your body

electrical impulses

hormonal

telegraph

proteins